Point 1 : (i) a is visible as per definition 1.
xxxxxxx#(ii) b is visible as per definition 2.
xxxxxxxx(iii) c is visible as per definition 2.
xxxxxxxx(iv) d is visible as per definition 2.

Point 2 : (i) a is visible as per definition 1.
xxxxxxx#(ii) b is visible as per definition 2.
xxxxxxxx(iii) c is visible as per definition 3.
xxxxxxxx(iv) d is visible as per definition 3.
xxxxxxx#(v) e is visible as per definition 3.

Point 3 : Same as Point 1.

Point 4 : (i) a is visible as per definition 1.
xxxxxxx#(ii) b is visible as per definition 1.
xxxxxxxx(iii) c is visible as per definition 1.

If you don't understand Static Scoping, look at the link I mentioned for shabbir (in the post above).